There is a way to get 2021 TT to correctly calculate line 14 (a)-(c) if you have any long term capital gains in the first three periods. Simply enter the combined total of cumulative CG/QD into the inputs for QD and enter zeros in the LT CG boxes. TT will then properly scale the total CG/QD by the respective period factors and produce the correct values in line 14 (a)-(c) that TT uses to determine whether an underpayment has occurred. The specific breakdown between CG and QD is never shown in either Form 2210 or Form 2210AI that get filed when forms are printed and the IRS accepted a return that was e-filed with this tweak. Use of this option should be considered if TT calculates that an underpayment is due in order to eliminate or reduce a penalty that TT has over estimated because of their failure to properly implement the IRS requirements in Form2210AI.
